JP2017023462A - Pile knitted fabric and manufacturing method of the same and washing tool or cleaning tool using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide: a pile knitted fabric which has high rigidity in the cut pile and excels in detergency when used as a washing tool; a method for manufacturing the pile knitted fabric; and a washing tool or a cleaning tool using the pile knitted fabric.SOLUTION: The pile knitted fabric comprises a ground weave and a cut pile, the cut pile consists of heat fusible filament having single fiber fineness of 5-40 dtex, total number of the cut pile of the knitted fabric is 5,000-54,000 per one square inch, furthermore, the compressive hardness (LC) of the pile knitted fabric is 0.40 or more in KES measurement and the recoverability (RC) is 50% or more in the pile knitted fabric.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a pile knitted fabric having a hard cut pile and a manufacturing method thereof, and further relates to a cleaning tool or a cleaning tool using the pile knitted fabric.

  Conventionally, many so-called scrubbing tools have been used as a cleaning tool. However, since the raised parts (also called piles) of scrubbing are generally thick and rough, it is difficult to remove fine dirt. It was.

  On the other hand, many sponges are used for cleaning delicate items. Sponges are suitable for pottery and glassware, but are not suitable for removing hard and sticky stains such as frying pans and scorching pans. Moreover, deterioration is also quick because of its flexibility. In view of this, it has been proposed that a cloth having a loop pile or a cut pile made of synthetic fiber or the like is attached to this sponge, and the pile acts like the above-described raised portion of the scrubbing brush to remove scorching and the like. (See Patent Documents 1 and 2, etc.).

Japanese Utility Model Publication No. 5-48859 JP 2007-244598 A

  However, piles made of synthetic fibers that have been proposed so far have problems such as low rigidity and insufficient cleaning effect, and deterioration of the cleaning tool itself due to repeated use. For example, if the pressure applied to the pile is larger than the rigidity of the pile, the pile will be bent into a "<" shape, and the cleaning power will be reduced, and deterioration will be promoted.

  The present invention has been made in view of such circumstances. The purpose of the present invention is to have a high cut pile rigidity and excellent cleaning power when used as a cleaning tool, and cleaning when used as a cleaning tool. It is another object of the present invention to provide a pile knitted fabric having excellent properties, and further to provide a method for producing such a pile knitted fabric. Moreover, it is providing the cleaning tool or cleaning tool using the said pile knitted fabric.

The above object is a pile knitted fabric composed of a ground structure and a cut pile, wherein the cut pile is composed of a heat-bonding filament having a single yarn fineness of 5 to 40 dtex, and the cut pile per square inch of the pile knitted fabric The total number is 5,000 to 54,000, and further, the compression hardness (LC) of the pile knitted fabric measured by KES is 0.40 or more, and the recoverability (RC) is 50% or more. Achieved by a pile knitted fabric.
Another object of the present invention is to heat-set a double warp knitted fabric in which two ground structures are connected by a connecting yarn composed of heat-bonding filaments at a temperature below the melting point or softening point of the heat-bonding filaments. Then, the pile knitted fabric is obtained by cutting the center of the connecting yarn into two pile knitted fabrics, and the pile knitted fabric is heated at a temperature equal to or higher than the melting point or softening point of the heat fusion filament. This is achieved by the manufacturing method.
Furthermore, the object of the present invention is achieved by a cleaning tool or a cleaning tool having the pile knitted fabric.

According to the present invention, a pile knitted fabric having excellent detergency can be obtained. In other words, it has a high density of cut piles with fine single yarn fineness, and the rigidity of the cut pile is large, so it is hard to remove dirt, such as scorching frying pans and pans, scorching fish grills and barbecue nets. It is suitable for. In addition, the pile knitted fabric of the present invention is used for removing dirt in the gaps of joints such as tiles, removing dirt on the nets in drains, removing hair such as carpets, animal hair, dust, wool, etc. Can also be suitably used.
Moreover, according to the method for manufacturing a pile knitted fabric of the present invention, a pile knitted fabric having high rigidity can be preferably manufactured.
In addition, the pile knitted fabric alone can be used as a cleaning tool or a cleaning tool. However, the pile knitted fabric may be combined with a sponge or the like as a cleaning tool or a cleaning tool. In addition to the effect, it becomes easy to grip, and various things can be suitably washed and cleaned according to the hardness of the sponge to be combined.

It is a microscope picture which shows the cross-section partial enlarged part of one Embodiment of the pile knitted fabric of this invention. It is explanatory drawing which shows the schematic diagram of the graph obtained by KES measurement. It is explanatory drawing which shows one Embodiment of the cleaning tool using the pile knitted fabric of this invention.

  The pile knitted fabric of the present invention is a pile knitted fabric having a ground structure and a cut pile, and this cut pile is composed of a heat-sealing filament having a single yarn fineness of 5 to 40 dtex, and is per square inch of the pile knitted fabric. The total number of cut piles is 5,000 to 54,000, and the compression hardness (LC) of the pile knitted fabric in KES measurement is 0.40 or more, and the recoverability (RC) is 50% or more. It is a feature.

  In the present invention, when a heat-sealing filament is used, a pile knitted fabric having a cut pile with high rigidity can be obtained. Moreover, when it is set as a knitted fabric, since the crossing fibers can be heat-seal | fused, the shape retention property of a pile knitted fabric can be made favorable. In addition, since the fibers that come into contact with each other can also be thermally bonded, some cut piles are thermally bonded to each other while maintaining the unevenness of the cut pile tip, and a cleaning / cleaning effect according to the purpose can be expected. .

The heat-sealing filament used in the present invention is preferably a core-sheath structure fiber having a difference between the core resin melting point and the sheath resin melting point of 30 ° C. or more. Here, when using amorphous resin for a core part or a sheath part, a softening point is adopted instead of a melting point.
The melting point means a crystal melting temperature in DSC measurement of a thermoplastic resin having crystallinity, and the softening point means a temperature at which the resin constituting the fiber starts to soften.
In the present invention, the melting point is measured using a differential scanning calorimeter (DSC7 manufactured by Perkin Elmer Co.) at a heating rate of 20 ° C./min. On the other hand, the softening point is measured in accordance with “Method of softening temperature test by thermomechanical analysis of thermoplastic film and sheet” of JIS K7196 method.

The heat-sealing filament used in the present invention is, for example, a resin whose core resin has a melting point of 260 ° C. or higher, such as homopolyethylene terephthalate, and a resin whose sheath resin has a melting point of 230 ° C. or lower, such as low-melting polyester. The one consisting of is preferred. As the low melting point polyester, for example, copolymerized polyethylene terephthalate obtained by copolymerizing isophthalic acid is used. In addition, a copolymerized polyester obtained by copolymerizing 15 to 40 mol% of isophthalic acid with polyethylene terephthalate becomes amorphous, and therefore has a softening point of 130 to 230 ° C.
The core resin may be polyethylene terephthalate copolymerized with 10 mol% or less of isophthalic acid instead of homopolyethylene terephthalate.

In addition, the composite ratio (volume ratio) of the core-sheath resin of the core-sheath structure fiber is preferably 6: 4 to 2: 8, and particularly preferably 5: 5 to 3: 7. If the sheath resin is less than 40%, the formability of the pile knitted fabric may be deteriorated, or the melt-bonding property may be reduced when heat-sealing is used as a knitted fabric. If it exceeds 80%, the strength of the knitted fabric may decrease because the core resin decreases.

What is necessary is just to manufacture the core-sheath structure fiber used by this invention with a normal spinning apparatus.
Further, the core-sheath structure fiber used in the present invention is preferably not eccentric, and may have two or more core parts, and a part of the core part is a fiber as long as the object of the present invention is not impaired. It may be exposed on the surface.

  The single yarn fineness of the cut pile is required to be 5 to 40 dtex. If it is smaller than 5 dtex, the cut pile itself is too soft and the rigidity is not increased even after the heat treatment, the cut pile falls down at the time of cleaning / cleaning, and the cleaning / cleaning property is lowered, and the recoverability after use is also small. On the other hand, when the single yarn fineness exceeds 10 dtex, it is difficult to increase the single yarn density, and it becomes impossible to clean and clean fine stains. The single yarn fineness is preferably 10 to 30 dtex.

In the present invention, the cut pile is locked to the yarn constituting the ground structure and raised.
As the pile knitted fabric of the present invention, one obtained by cutting a connecting yarn center of a double knitted fabric in which two ground structures are connected by a connecting yarn with a knife or the like is preferably used.
In particular, a double warp knitted fabric such as a double raschel knitted fabric is preferably center-cut from the standpoints of the nap of the cut pile and the cross-sectional shape at the tip of the cut pile.

  It is preferable to use a multifilament for the connecting yarn. The apparent cross-sectional area is increased on the cleaning / cleaning surface, that is, the front end of the cut pile, so that the cleaning can be performed efficiently. Further, deterioration of the pile knitted fabric itself can be reduced.

  In this case, the total fineness of the multifilament is preferably 30 to 350 dtex. If it is less than 30 dtex, the strength tends to be low, and if it exceeds 350 dtex, the moldability tends to be poor. More preferably, it is 50-300 dtex.

  In the pile knitted fabric, it is necessary that 5,000 to 54,000 cut piles are arranged per square inch. If the number of single yarns is less than 5,000, the cleaning properties, cleaning properties and durability tend to be reduced. If the number exceeds 54,000, the ground structure becomes heavier and the number of cut piles increases. It may become difficult to move, making it difficult to obtain cleaning and cleaning effects. In particular, the number is preferably 7,000 to 48,000.

  In addition, you may use a non-heat-bonding filament etc. for a connection thread | yarn in the range which achieves the objective of this invention. By using yarns with different single yarn fineness and resin types, different cleaning and cleaning effects can be expected.

As the material of the ground texture, it is preferable to use a thread made of the same kind of resin as that used for the connecting thread. That is, if the heat-sealing filament is a polyester, it is preferable to use a polyester yarn.
Moreover, it is preferable that the fineness of the knitting yarn which comprises a ground structure is 30-660 dtex. If it is smaller than 30 dtex, the base of the cut pile cannot be strongly tightened, and the cut pile tends to fall over or the cut pile tends to come off. In addition, the tear strength tends to decrease. If it exceeds 660 dtex, the thread that locks the cut pile will be thick, and the gap near the root of the cut pile will be widened. As a result, the density of the entire cut pile will decrease, and the cleaning / cleaning property will tend to decrease. It is in. In particular, it is preferably 50 to 400 dtex.

  The thickness of the pile knitted fabric of the present invention may be appropriately set according to the use, but is preferably 1.5 to 8 mm. If the thickness is less than 1.5 mm, the cut pile itself is short, so that the cut pile does not reach the corners or gaps of the object to be cleaned, and the cleaning property tends to deteriorate. Moreover, when it exceeds 8 mm, a cut pile becomes easy to fall down, the front-end | tip part of a cut pile becomes difficult to hit a to-be-cleaned object, and washability may fall. In particular, the thickness is preferably 2 to 5 mm.

Further, the pile knitted fabric of the present invention is required to have a compression hardness (LC) of 0.40 or more in KES measurement, preferably 0.45 to 0.60. Further, the recoverability (RC) needs to be 50% or more, preferably 60% or more.
These are obtained by measuring using a handy compression tester (Kato Tech Co., Ltd., KES-G5). As a result of the measurement, a graph as shown in FIG. 2 is obtained. The compression hardness (LC) and the recoverability (RC) are calculated by the following equations.
Compression Hardness (LC) = area of a + b / ΔABC area recoverability (RC) = b area / a + b area Compression Hardness (LC) indicates that the closer the value is to 1, the harder the compression is. (RC) indicates that there is recoverability as the value approaches 100%.

  The pile knitted fabric of the present invention is more rigid than conventional synthetic fiber piles, and is excellent in cleanability and cleanability by combination with the single yarn fineness and single yarn density.

As described above, the pile knitted fabric of the present invention can be manufactured by cutting the connecting yarn center of the double knitted fabric in which two ground structures are connected by a connecting yarn with a cutter or the like. Specifically, for example, it is performed as follows.
That is, a double raschel knitting machine is used to supply a yarn that becomes a ground texture and a yarn that becomes a connecting yarn composed of heat-bonding filaments to each ridge, and the two ground textures are connected by a connecting yarn. Knit warp knitted fabric. The obtained double warp knitted fabric is heat-treated at a temperature lower than the melting point or softening point of the heat-sealing filament, and then the center of the connecting yarn is cut with a cutter or the like to form two pile knitted fabrics. Next, the obtained pile knitted fabric is heat-treated at a temperature equal to or higher than the melting point or softening point of the heat-sealing filament, thereby obtaining a pile knitted fabric having high rigidity satisfying the above conditions.

  The pile knitted fabric thus obtained is, for example, as shown in FIG. FIG. 1 is a photomicrograph showing a partially enlarged portion of a cross section of an embodiment of a pile knitted fabric of the present invention. As shown in FIG. 1, the cut pile portion is hard while maintaining the shape of the fiber, and some of the cut piles are heat-sealed.

  The pile knitted fabric of the present invention is excellent in cleaning power and cleaning power. In other words, it has a high density of cut piles with small single yarn fineness and the rigidity of the cut piles is large, so it is suitable for removing dirt such as scorching of frying pans and pans, scorching of grilled fish and barbecue nets. . Further, it can be suitably used for removal of dirt in joint gaps such as flooring and tiles, removal of dirt in nets of drainage grooves, removal of hair such as carpets, animal hair, dust, and wool.

The pile knitted fabric of the present invention can be used as a cleaning tool or a cleaning tool by itself, but can also be used by bonding to urethane, sponge, foamed polystyrene or the like.
When combined with a soft sponge, it can be washed well with a curved surface such as a frying pan, while when combined with a hard sponge with little elasticity, it is suitable for cleaning flat surfaces such as barbecue nets, flooring and tiles. Depending on the purpose, they may be combined appropriately.
As an example of the cleaning tool / cleaning tool, for example, the one shown in FIG. The pile knitted fabric 1 and the sponge 2 are bonded together with an adhesive, and can be used as the cleaning tool 3 or as a cleaning tool.

Hereinafter, the present invention will be specifically described with reference to examples.
The evaluation was performed as follows.

1) Breaking strength and breaking elongation of fiber Measured according to the standard time test of JIS L1013 (2010).

2) Detergency and cleanability The scorch of the frying pan, the scorch of the barbecue net, and the hair of the carpet were confirmed by visual observation.

3) Peeling of pile knitted fabric After the evaluation of the above-mentioned detergency or cleaning property, remove the dirt adhering to the pile knitted fabric, visually check its falling condition, ○ What did not exist was set as x.

Example 1
Using a double raschel machine RD6DPLM-77E-14G (made by Meyer), 筬 L1 and L2 are the surface texture (167 dtex / 72f, polyester multifilament), 筬 L5 and L6 are the back surface texture (167 dtex / 72f, polyester multifilament), and the ridges L3 and L4 joined the front and back fabrics to form a double warp knitted fabric. As a connecting thread, cores using 筬 L3 and L4, isophthalic acid copolymerized polyethylene terephthalate (isophthalic acid ratio 20 mol%) (softening point 185 ° C.) in the sheath, and homopolyethylene terephthalate (melting point 260 ° C.) in the core A heat-sealing multifilament with a sheath composite ratio of 1: 1 (280 dtex / 16f, single yarn fineness 17.5 dtex, strength 4.3 cN / dtex, elongation 38%) was used.
The connecting yarn was knitted with an underlap between two stitches.
After knitting, heat setting was performed at 170 ° C. and 12 m / min, and the center part of the connecting yarn of the obtained double warp knitted fabric was cut into two with a knife to obtain two pile knitted fabrics.
The resulting double warp knitted fabric had a weft density of 33 courses / 22 wells, and the total number of cut piles per square inch of the pile knitted fabric was 11,616.
Next, the obtained pile knitted fabric was heat-set at 190 ° C. and 15 m / min.
The compression hardness (LC) of the obtained pile knitted fabric measured by KES was 0.45, and the recoverability (RC) was 69.7%.
In addition, a sponge having a thickness of 4 cm was adhered to the obtained pile knitted fabric with an adhesive, and the cleaning performance and cleaning performance were evaluated.
The evaluation results are also shown in Table 1.

(Example 2)
鞘 L3 and L4, core-sheath composite ratio using isophthalic acid copolymerized polyethylene terephthalate (isophthalic acid ratio 20 mol%) (softening point 185 ° C) in the sheath and homopolyethylene terephthalate (melting point 260 ° C) in the core Is a heat-sealed multifilament (280 dtex / 48f, single yarn fineness 5.8 dtex, strength 5.2 cN / dtex, elongation 26%), and the weft density of the double warp knitted fabric is A pile knitted fabric was prepared and evaluated in the same manner as in Example 1 except that 33 courses / 21 wells and the total number of cut piles per square inch of the pile knitted fabric was 33,264. .
The obtained pile knitted fabric had a compression hardness (LC) of 0.5 and a recoverability (RC) of 70.2% as measured by KES.
The evaluation results are also shown in Table 1.

(Comparative Example 1)
The density of the background of the double warp knitted fabric is 24 courses / 12 wells, and the total number of cut piles per square inch of the pile knitted fabric is 4,608. A pile knitted fabric was created and evaluated.
The compression hardness (LC) of the obtained pile knitted fabric measured by KES was 0.36, and the recoverability (RC) was 51.4%.
The evaluation results are also shown in Table 1.

(Comparative Example 2)
The density of the background of the double warp knitted fabric was 38 courses / 30 wells, and the total number of cut piles per square inch of the pile knitted fabric was 54,720. A pile knitted fabric was created and evaluated.
The compression hardness (LC) of the obtained pile knitted fabric measured by KES was 0.47, and the recoverability (RC) was 69.5%.
The evaluation results are also shown in Table 1.

1 Pile knitted fabric 2 Sponge 3 Cleaning tool

Claims (4)

  A pile knitted fabric composed of a ground structure and cut piles, wherein the cut pile is composed of heat-sealed filaments having a single yarn fineness of 5 to 40 dtex, and the total number of cut piles per square inch of the pile knitted fabric is 5, A pile knitted fabric characterized by having 5,000 to 54,000 pieces, and further having a compression hardness (LC) of 0.40 or more and a recoverability (RC) of 50% or more in KES measurement.   A double warp knitted fabric in which two ground structures are connected by a connecting yarn composed of heat-sealing filaments is heat-treated at a temperature below the melting point or softening point of the heat-sealing filaments, and then the center of the connecting yarn is cut. A pile knitted fabric, and the pile knitted fabric is heat-treated at a temperature equal to or higher than the melting point or softening point of the heat-bonding filament.   A cleaning tool comprising the pile knitted fabric according to claim 1.   A cleaning tool comprising the pile knitted fabric according to claim 1.

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